Phylum Schizoramia Bergström, 1976a see Phylum Arthropoda Siebold, 1848
   Superclass †Lamellipedia Hou & Bergström, 1997 - lamellipedians
     Class †Artiopoda Hou & Bergström, 1997 see Subphylum Artiopoda Hou & Bergström, 1997
       1 Subclass †Nectopleura Hou & Bergström, 1997
       2 Subclass †Conciliterga Hou & Bergström, 1997
       3 Subclass †Trilobita Walch, 1771 see Class Trilobita Walch, 1771
       4 Subclass †Petalopleura Hou & Bergström, 1997
       5 Subclass †Xenopoda Raymond, 1935
       6 Subclass †Aglaspidida (Walcott, 1911) Bergström, 1968 see Order Aglaspidida Walcott, 1911